{"schema_version":"1.7.5","id":"GO-2026-4837","published":"2026-03-26T20:33:05Z","modified":"2026-03-27T18:26:19.936468Z","aliases":["BIT-nats-2026-33218","CVE-2026-33218","GHSA-vprv-35vv-q339"],"related":["CGA-32mq-856x-9662"],"summary":"NATS has pre-auth server panic via leafnode handling in github.com/nats-io/nats-server","details":"NATS has pre-auth server panic via leafnode handling in github.com/nats-io/nats-server","affected":[{"package":{"name":"github.com/nats-io/nats-server","ecosystem":"Go","purl":"pkg:golang/github.com/nats-io/nats-server"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://vuln.go.dev/ID/GO-2026-4837.json"}},{"package":{"name":"github.com/nats-io/nats-server/v2","ecosystem":"Go","purl":"pkg:golang/github.com/nats-io/nats-server/v2"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.11.15"},{"introduced":"2.12.0-RC.1"},{"fixed":"2.12.6"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://vuln.go.dev/ID/GO-2026-4837.json"}}],"references":[{"type":"ADVISORY","url":"https://github.com/nats-io/nats-server/security/advisories/GHSA-vprv-35vv-q339"},{"type":"WEB","url":"https://advisories.nats.io/CVE/secnote-2026-10.txt"}],"database_specific":{"review_status":"UNREVIEWED","url":"https://pkg.go.dev/vuln/GO-2026-4837"}}